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14 results for “Melanosuchus”
Figs 1–6 in Eimeria spp. (Apicomplexa: Eimeriidae) in Black Caiman Melanosuchus niger (Crocodilia: Alligatoridae) from the Amazon Region, Brazil, with a Description of Two New Coccidian Species
Figs 1–6. Nomarski interference micrographs of sporulated coccidia oocysts found in black caimans faeces × 1,000. 1–2 – Eimeria nigeri n. sp.; 3–4 – Eimeria portovelhensis n. sp.; 5–6 – Eimeria paraguayensis. FIL – filament from the area of the Stieda body, OR – oocyst residuum, OW – oocyst wall, RB – refractile body, SB – Stieda body, SR – sporocyst residuum.
Fig. 1 in Serological evidence of Toxoplasma gondii infection in Melanosuchus niger (Spix, 1825) and Caimam crocodilus (Linnaeus, 1758)
Fig. 1. Venn diagram displaying positivity of alligator serum samples to Toxoplasma gondii analyzed by serological methods MAT and IHA.
FIGURE 10 in On a new Melanosuchus species (Alligatoroidea: Caimaninae) from Solimões Formation (Eocene-Pliocene), Northern Brazil, and evolution of Caimaninae
FIGURE 10. Jacarea relationships from MLT's that generated the polytomy in the strict consensus. Bold numbers refer to the number of the character in character list and the italic numbers demonstrated the condition of the character in both ancestral and descendent species.
FIGURE 8. Melanosuchus niger UFAC R-203 in On a new Melanosuchus species (Alligatoroidea: Caimaninae) from Solimões Formation (Eocene-Pliocene), Northern Brazil, and evolution of Caimaninae
FIGURE 8. Melanosuchus niger UFAC R-203 in anterolateral view. (A) Original specimen; (B) Schematic draw elucidating the presence and positioning of the rostral ridges. Anatomical abbreviations: l, lacrimal; EN, external nares; ITF, infratemporal fenestra; J, jugal; pmx, premaxilla; mx, maxilla; n, nasal; nc, narial crest; O, orbit; rd1, rostral ridge 1; rd2, rostral ridge 2. Scale bar = 20mm.
FIGURE 7 in On a new Melanosuchus species (Alligatoroidea: Caimaninae) from Solimões Formation (Eocene-Pliocene), Northern Brazil, and evolution of Caimaninae
FIGURE 7. The vomer anatomy of Melanosuchus niger specimens (UFAC R-136 and UFAC R-203) in comparison with Paleosuchus palpebrosus specimen (UFAC R-215). (A) Anterodorsal view of the inside of external nares, in red, the articulated vomer in Melanosuchus niger (UFAC R-136); (B) Schematic draw of figure A; (C) Medial view of right rostrum of Melanosuchus niger (UFAC R-203) highlighting the contacts of vomer with premaxilla and maxilla after the bone removal; and (D) Paleosuchus palpebrosus specimen (UFAC R-215) illustrating an example where the vomer is fused with other bones. Dark lines mark bone limits and sutures. Anatomical abbreviations: if, incisive foramen; EN, external nares; pmx-mx, suture between premaxillary and maxillary; pmx-v, suture between premaxilla and vomer; pmx, premaxilla; mx-mx, suture between maxillae; mx-v, suture between maxillary and vomer; mx, maxilla; n, nasal; v, vomer. Out of scale.
FIGURE 2. Melanosuchus latrubessei UFAC 2793 in On a new Melanosuchus species (Alligatoroidea: Caimaninae) from Solimões Formation (Eocene-Pliocene), Northern Brazil, and evolution of Caimaninae
FIGURE 2. Melanosuchus latrubessei UFAC 2793 in dorsal view. (A) UFAC 2793 fossil specimen; and (B) Schematic draw. Anatomical abbreviations: if, incisive foramen; EN, external nares; J, jugal; pmx, premaxilla; mx, maxilla; n, nasal; rd1, rostral ridge 1; rd2, rostral ridge 2. Scale bar = 20mm.
FIGURE 1 in On a new Melanosuchus species (Alligatoroidea: Caimaninae) from Solimões Formation (Eocene-Pliocene), Northern Brazil, and evolution of Caimaninae
FIGURE 1. Localization of the Talism" fossiliferous outcrop, State of Amazonas, Brazil. (A) Indication of the locality in a South America map (red rectangular box); and, (B) The red rectangular box, in zoom, with a black prism indicating the Talism" locality.
FIGURE 5. Melanosuchus latrubessei UFAC 2793 in On a new Melanosuchus species (Alligatoroidea: Caimaninae) from Solimões Formation (Eocene-Pliocene), Northern Brazil, and evolution of Caimaninae
FIGURE 5. Melanosuchus latrubessei UFAC 2793 in detail of the premaxillary-nasal anterior region. (A) Anterodorsomedial view of the right elements, via sagittal cut, elucidating the limits between premaxilla and nasal; (B) Anterior view of premaxilla, within the external nares, elucidating the absence of premaxilla-nasal suture at this view; (C) Medioventral view demonstrating the overlap suture of premaxilla over nasal; and, (D) Medial view of right elements, via sagittal cut, demarked limits between premaxilla and nasals demonstrating the only possible way to nasal reach the external nares. Full line indicates visible sutures while dashed lines indicated inferred bone limits. Anatomical abbreviations: EN, external nares; pmx-n, suture between premaxilla and nasal; pmx-pmx, suture between premaxillae; pmx, premaxilla; mx-mx, suture between maxillae; n-n, suture between nasals; n, nasal. Out of scale.
Figs 7–8 in Eimeria spp. (Apicomplexa: Eimeriidae) in Black Caiman Melanosuchus niger (Crocodilia: Alligatoridae) from the Amazon Region, Brazil, with a Description of Two New Coccidian Species
Figs 7–8. Line drawings of sporulated coccidian oocysts collected from black caiman faeces. 7 – Eimeria nigeri n. sp.; 8 – Eimeria portovelhensis n. sp.
FIGURE 11 in On a new Melanosuchus species (Alligatoroidea: Caimaninae) from Solimões Formation (Eocene-Pliocene), Northern Brazil, and evolution of Caimaninae
FIGURE 11. Projection of individuals in the rostral morphospace (PCA). (A) Dorsal view, PC1 vs. PC2 (~61%); (B) Dorsal view, PC1 vs. PC3 (~58%); (C) Dorsal view, PC1 vs. PC4 (~56%); and (D) Ventral view, PC1 vs. PC2 (~66%).
FIGURE 6. Melanosuchus latrubessei UFAC 2793 in On a new Melanosuchus species (Alligatoroidea: Caimaninae) from Solimões Formation (Eocene-Pliocene), Northern Brazil, and evolution of Caimaninae
FIGURE 6. Melanosuchus latrubessei UFAC 2793 in details of the maxillary and premaxillary limits of the ventral portion in medial view. (A) Elucidating the preserved anterior limit of premaxilla; (B) The anterior limit of maxilla-maxilla suture and the posterior broken region of premaxilla; and (C) Zoom in the limit maxilla-maxilla suture elucidating an anterior smooth surface that is here inferred as the posterior limit for maxillary-vomer contact. Dark lines delimit the bone limits and sutures. Anatomical abbreviations: if, incisive foramen; EN, external nares; pmx, premaxilla; mx-mx, suture between maxillae; mx-v, suture between maxillary and vomer. Out of scale.
FIGURE 9. Calibrated consensus cladogram from 16,800 MLT with 641 in On a new Melanosuchus species (Alligatoroidea: Caimaninae) from Solimões Formation (Eocene-Pliocene), Northern Brazil, and evolution of Caimaninae
FIGURE 9. Calibrated consensus cladogram from 16,800 MLT with 641 steps (CI: 0.382; RI: 0.807) restricted to Caimaninae. The thin lines indicate the inferred relationships. Dark large lines indicate the known temporal occurrence of the species. Gray large line indicate the known temporal occurrence of Melanosuchus cf. M. niger or Melanosuchus indet.
FIGURE 3. Melanosuchus latrubessei UFAC 2793 in On a new Melanosuchus species (Alligatoroidea: Caimaninae) from Solimões Formation (Eocene-Pliocene), Northern Brazil, and evolution of Caimaninae
FIGURE 3. Melanosuchus latrubessei UFAC 2793 in ventral view. (A) UFAC 2793 fossil specimen; and (B) Schematic draw. Anatomical abbreviations: 4th, fourth maxillary alveolus; 4th dm, tooth mark from fourth dentary; 12th, twelfth maxillary alveolus; ect, ectopterygoid; if, incisive foramen; pmx, premaxilla; mx-pl, suture between maxillary and palatine; mx, maxilla; sof, suborbital (palatine) fenestrae. Scale bar = 20mm.
FIGURE 4. Melanosuchus latrubessei UFAC 2793 in On a new Melanosuchus species (Alligatoroidea: Caimaninae) from Solimões Formation (Eocene-Pliocene), Northern Brazil, and evolution of Caimaninae
FIGURE 4. Melanosuchus latrubessei UFAC 2793. (A) UFAC 2793 fossil specimen in laterodorsal view; (B) Schematic draw in laterodorsal view; and (C) fossil specimen in lateral view. Anatomical abbreviations: J, jugal; pmx, premaxilla; mx, maxilla; n, nasal; nc, narial crest; rd1, rostral ridge 1; rd2, rostral ridge 2. Scale bar, A and B = 20mm; C = 50mm.
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